Cableway and carriage



Dec. 7 1926. r 1,609,471

A. E. HANSEN CABLEWAY AND CARRIAGE I Filed March 26, 1924 2 Sheets-Sheab1 Q v m Q W D gwwntoc Arr/20;"- if'. Hansen 1 I Quorum! V Dec. 7 ,1926.- .-1,609,471 v A. E. HANSEN CABLEWAY AND CARRIAGE Filed March 0,1924 2 Sheets-Sheet 2 6H0! new 5; i v I, I I I Q" APT/2U) 5.; Hansenbetween their ends at 41, at opposite ends of the carriage andprojecting therefrom to engage each its respective stop 3. The dogs 4:are weighted so that they normally lie in a released position, but areso positioned that as the carriage reaches one of the stops 3, theshoulder 42 of the dog at this end will strike the stop 3 to raise itsweighted end, whereupon the stop is engaged and held between theshoulder 42 and the normally slightly lower shoulder l3 of the dog.Means are provided for locking the dogs thereupon in this position, andin consequence the carriage is held in this position by the engagementof this dog with its stop 3, and cannot be moved until the dog isreleased. Preferably both dogs are connected to operate simultaneously,and thus connected form a carriage-positioning assembly, all parts ofwhich are directly connected. Connection of the dogs may be secured bymeans of a link 44, pivoted at 45 below the pivot 11 of one dog and at46 above the pivot of the other dog. Movement of the weighted end of onedog upward moves the other dog upward also, as has been indicated bydotted lines in Figure 2.

For retaining the dogs in upraised or locked position, I provide a latch5, which is pivoted at 51 in the carriage, 1. Associated with this latch5 is a weighted arm 52, this as shown forming a part of the latch. A.cam surface 53 on the latch 5 will engage an end of a bolt or lockingbar 54, which is connected at to one of the dogs 1, to maintain thisbolt 5% projecting in a position corresponding to locking position ofthe dogs, so long as the weighted arm 52 is in its lowered position, asshown by dotted lines in Figure 2. However, a recess or shoulder 56interrupts the cam surface 53 and is registrable with the end of thebolt 54 when the weighted arm 52 is upraised, and when in registrytherewith permits reciprocation of the bolt 54: to permit the dogs 4 todrop of their own weight into released position. The shoulder 56 isthereupon engaged by the bolt 54L to retain the weighted arm 52 inupraised position until it is desired to release it.

I have shown the hauling line 80 as guided over a sheave 11, thencethrough a. sheave 21 secured in the fall block 2 and thence extending toa pin 12 in the carriage, to which its end is secured, though theprecise arrangement is largely immaterial. lthe portion between thesheave 11 and the pin 12 forms the hoist line 82. Between the sheave 11and the pin 12, and immediately above the normal path of the fall block2, the lower edge of the carriage is notched as indicated at 13, and apin 23, projecting upwardly from the fall block 2, enters this notch 13as the fall block is lifted. It is guided by the converging sides of thenotch 13 into engagement with the weighted arm 52 when the latter isdown, the pivot 51 being to one side of the notch 13, and by its upwardmovement raises the arm 52. The latch 5 may be formed with a hoolr 57which, as the latch and its arm 52 are swung upward, engages beneath thepin 23 of the fall block.

Such action starts when the fall block is lowered, when one of the dogsa is engaged with its stop 3, and when the weighted arm 52 is in theposition shown in dotted lines in Figure 2, that is, when the bolt 54:holds the dogs locked by reason of its engagement with the cam surface52. As the pin 23 engages the arm 52 and raises it, movement of thelatch 5 moves its cam surface over the end of the bolt 5% until at thetime the pin 23 is supportingly engaged by the hook 57, the end ofthebolt 5 1 drops engagement with the shoulder 56 under the weight of thedogs 4.- and associated mechanism as the dogs are released. At the time,however, engagement of the bolt with the shoulder 56 prevents a reversemovement of the latch 5 and maintains the hook 57 in position to supportthe fall block 2.

The carriage is then in condition to be moved along the trackway cable8, the fall block being loclzed thereto. It is then traversed by meanseither of the hauling line I 30 or the haul-back line 81, and duringmovement along the sky-line 8 there is no way in which the bolt 5% mayaccidentally be retracted. However, upon reaching the opposite end ofits run the dog a at this end of the carriage, by engagement with itsstop 3, is raised, the dog at the opposite end being likewise raised,and the bolt 5 1 is retracted. This withdraws th locking means for thefall block and permits the weighted arm 52 to drop. The fall block 2 isthereupon placed in position to be lowered, and its lowering iscontrolled through the line 80.

1n long spans, and especially when logging down hill, even though thespan be a short one, there is a tendency for the carriage to run awaydown hill. If the span is substantially level the carriage will tend torun toward the center. If the span is on a steep incline, the tendencyis, of course, to run to the bottom of the incline. carriages, weighinghundreds of pounds unloaded, are tremendously destructive and highlydangerous if once out of control. In order, therefore, to check thecarriage if possible, and to stop it once it has gotten away fromcontrol, I have provided the safety means which I will now describe.

It is evident that so long as the bolt 54 is not retracted fromengagement with the recess 56, the fall block cannot be dropped, butthat if the bolt is retracted the fall block is free to drop. 1therefore provide a downward extension 17 upon one of the SuchOrdinarily the safety line G'O-has'no-strainplaced upon it, andconsequently there is no pull upon the arm 63 except that due to theweight of the line 60. However, if

it should be desired in an emergency'to 'release the 'fall block 2, thismaybe'done by checking the paying out of line from the drum 64, by somemeans common in the art, as by applying '-a'brake to the drum'64i.

The result of this is to pull on the arm 63 and the trip lever 6, inopposition to the spring 61, whereupon the extension 47 is thrown to theright, as'see'n in Figure 2, and the bolt 54 is retracted. The latch 5immediately swings over to position to release the fall block 2, and ifthere is no tension on the line the fall block immediately drops to theground with its load, and acts as an efiective drag to check and stopthe runaway movement of the carriage 1.

What we claim as our invention is:

1. In a cableway carriage, a pair of angularly disposed locking dogseach pivoted at it angle and positioned at opposite ends of thecarriage, one arm of each projecting laterally beyond the carriage andweighted to tend to remain in lowered, released position, the other armextending downwardly, a third arm on one of said dogs extending upwardlyfrom its pivot, a rod directly connecting said upwardly extending armwith the downwardly extending arm of the opposite dog, a bolt movable inthe carriage and connected for movement to one of said dogs, a latch andhook member pivoted in the carriage and engageable by said bolt, saidlatch and hook member being weighted to retain said dogs in upraisedlocked position when the hook is in load-releasing position, and movableto swing the hook into load-sustaining position and to release the dogsfor movement by gravity into released position.

2. In a cable-way carriage, a pair of angularly disposed locking dogseach pivoted at its angle and positioned at opposite ends of thecarriage, one arm of each projecting laterally beyond the carriage andweighted to tend to remain in lowered, released position, the other armextending downwardly, a third arm on one of said dogs extending upwardlyfrom its pivot, a rod directly connecting said upwardly extending armwith the downwardly extending arm of the opposite dog, a bolt movable inthe carriage and connected directly to the lower end of one. of saiddogs, a latch and hook member pivoted in theearriage and weighted'totend to :position the hook in load-releasing position, said boltengaging said latch unem'ber atsuch times to retain the-dogs in upraisedlocking position, said latch "and hook meme ber being swingable to'bring the hook into load-sustaining position, the bolt at such timesbeing engageable therewith to retain the hook in loadsustaining1position,;and be .ing :movabl'e into :such' engagementgravitational movement of the dogs into releasing position. I

e 3. Ina cableway carriage, aipair ofangularly disposed locking 1 dogseach pi-voted :at its an'gle and positioned at-opposite ends i of thecarriage, one'arnrof eaclrprojecting-laterally. beyond the carriage andweighted to tend to remain in: lowered, v*rleased ipos-ition, the otherarm extending downwardly, a third armonone ofsaid dogs extendingupwardly from its pivot, a rod directly connecting said upwardlyextending arm with the downwardly extending arm of the opposite dog, abolt movable in the carriage and connected directly to the lower end ofthat dog having the upwardly extending arm, a latch and hook memberpivoted in the carriage and weighted to tend to position the hook inload-releasing position, said bolt engaging said latch member at suchtimes to retain the dogs in upraised locking position,

said latch and hook member being swingable to bring the hook intoload-sustaining position, the bolt at such times being e11- gageabletherewith to retain the hook in load-sustaining position, and beingmovable into such engagement by gravitational movement of the dogs intoreleasing position.

4. In a cableway system, a trackway cable, a carriage movabletherealong, a stop fixed at each end of the run of said carriage, a fallblock hoisting means therefor, a pair of simultaneously operable lockingdogs upon the carriage each engageable with its respective one of saidfixed stops, and means operatively connected to said locking dogs forretaining them in looking position until said fall blockhas beenraisedto a predetermined position beneath the carriage, and forretaining said fall block in such raised position thereafter until oneof said dogs is engaged with its fixed stop, a spring-held trip lever, amember in the locking system engageable thereby, when the trip lever ismoved in opposition to said spring, to release said fall block, and asafety line operatively connected tosaid trip lever and extending to adistant point.

5. In a cableway carriage, a pair'of angu larly disposed locking dogseach pivoted at its angle and positioned at opposite ends of thecarriage, one arm of each projecting lat- Y the other arm extendingdownwardly, a third arm on one of said dogs extending upwardly from itspivot, a rod directly con necting said upwardly extending arm with thedownwardly extending arm of the opposite dog, a bolt movable in thecarriage and connected for movement to one of said dogs, a latch andhook member pivoted in the carriage and engageable by said bolt,'saidlatch and hook member being weighted 'to retain said dogs in upraisedlocked position when the hook is in load-releasing position, and movableto swing the hook into loadsustaining position and to release the dogs"for movement by gravity into released position, a downward extension onone of said dogs, a trip lever yieldingly held in engagement with saidextension, and means connecting said trip lever with a distant point foractuating said dogs and the associated mechanism to efiect release ofthe hook at will.

6. In a cableway carriage, a carriage positioning assembly comprisinga'pair of locking dogs at opposite ends of the carriage and projectingtherefrom, said dogs being pivoted and weighted to tend to remain inlowcred, released position, and a rod directly connecting said dogs forsimultaneous movement, a bolt movable in the carriage and directlyconnected to and movable with a member of said positioning assembly, alatch and hook member pivoted in the carriage and engageable by saidbolt, said latch and hook member being weighted to retain said dogs inupraised, locked position when the hook is in load-releasing position,and movable to swing the hook into load-sustaining position and torelease the dogs for move ment by gravity into released position.

Signed at Seattle,

King County, Wash-- ington.

ARTHUR E. HANSEN.

